Year	Number of Firms
1992-01-01	66
1997-01-01	132
2002-01-01	154
2003-01-01	175
2004-01-01	156
2005-01-01	168
2006-01-01	142
2007-01-01	150
2008-01-01	163
2009-01-01	131
2010-01-01	132
2011-01-01	141
2012-01-01	139
2013-01-01	176
2014-01-01	167
2015-01-01	172
2016-01-01	150